Results 41 to 50 of about 41,220 (167)
FluidsLarge underwater vehicles, designed for multiple cruising speeds, are required to operate under diverse conditions such as full speed, surfacing, diving, and hovering.
Xiaoqi Jia +5 more
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International Journal of Rotating Machinery, 2013 This paper explores the effect of inlet shear flow on the tip leakage flow in an axial flow compressor cascade. A flow with a high shear rate is generated in the test section of an open circuit cascade wind tunnel by using a combination of screens with a
Mahesh Varpe, A. M. Pradeep
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Numerical investigation of tip leakage vortex cavitation
IOP Conference Series: Earth and Environmental Science, 2019 Tip leakage vortex cavitation is a concern for axial hydraulic turbines. Generally, cavitation may occur in the core of the TLV, often leading to erosion of the runner blades and the casing. The objective of this paper is to study the effects of this phenomenon on the hydrodynamics characteristics of a standard NACA0009 blade.
Ali Maghooli +2 more
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International Journal of Rotating Machinery, 2010 This article presents the detailed study of rotor tip leakage related phenomena in a low speed axial compressor rotor passages for three sweep configurations [Unswept (UNS), Tip Chordline Swept (TCS) and Axially Swept (AXS)].
P. V. Ramakrishna, M. Govardhan
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Tip Leakage Vortex Cavitation from the Tip Clearance of a Single Hydrofoil
JSME International Journal Series B, 2002 Abstract Focusing on the tip leakage vortex cavitation, experimental and numerical studies were carried out as the first step of the investigation of cavitations in tip leakage flow. For a single hydrofoil with a tip clearance, tip leakage vortex cavitations were observed for various cavitation numbers and angles of attack.
Seiji HIGASHI +2 more
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Wavelet Analysis of a Blade Tip-Leakage Flow [PDF]
AIAA Journal, 2018 The secondary flow generated by the clearance between an isolated airfoil tip and an end-plate is analyzed by means of a zonal large-eddy simulation, in comparison with available experimental data. The flow around the tip clearance is described with full large-eddy simulation, while Reynolds-averaged Navier-Stokes is employed in the rest of the ...
Boudet, Jérôme +4 more
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Prediction of Tip-Leakage Losses in Axial Turbines [PDF]
Journal of Turbomachinery, 1990 Existing methods for predicting the tip-leakage losses in turbomachinery are based on a variety of assumptions, many of which have not been fully verified experimentally. Recently, several detailed experimental studies in turbine cascades have helped to clarify the physics of the flow and provide data on the evolution of the losses.
M. I. Yaras, S. A. Sjolander
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International Journal of Rotating Machinery, 2011 The aerodynamic losses in gas turbines are mainly caused by profile loss secondary flow, and tip leakage loss. This study focuses on tip leakage flow of high-pressure turbine stages.
Hesham M. El-Batsh, Magdy Bassily Hanna
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Annals of Gastroenterological SurgeryBackground Anastomotic leakage after esophagectomy is a common complication. Laser Doppler flowmetry (LDF) can quantitatively evaluate the blood flow in the gastric conduit.
Hirotaka Ishida +9 more
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Numerical investigations of tip clearance flow characteristics of a pumpjet propulsor
International Journal of Naval Architecture and Ocean Engineering, 2018 In this study, numerical investigations of the tip clearance flow characteristics of a pumpjet propulsor based on Computational Fluid Dynamics (CFD) method have been presented.
Lin Lu, Yuefei Gao, Qiang Li, Lin Du
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